diff --git a/Gemfile.lock b/Gemfile.lock
index e1bd8809..818444b5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,8 +6,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     base58 (0.2.3)
     bindata (2.4.4)
     bitcoin-ruby (0.0.18)
@@ -22,7 +22,9 @@ GEM
     eventmachine (1.2.7)
     ffi (1.9.25)
     forwardable-extended (2.6.0)
-    git (1.5.0)
+    git (1.13.0)
+      addressable (~> 2.8)
+      rchardet (~> 1.8)
     hashie (3.6.0)
     html-proofer (3.9.3)
       activesupport (>= 4.2, < 6.0)
@@ -78,11 +80,12 @@ GEM
     parallel (1.12.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (3.0.3)
+    public_suffix (5.0.1)
     rake (12.3.2)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
       ffi (~> 1.0)
+    rchardet (1.8.0)
     rouge (3.3.0)
     ruby_dep (1.5.0)
     safe_yaml (1.0.4)